This circuit for generating precise reference signals was found in the April 1973 issue of Radio Electronics magazine. The circuit generates 100 kHz signals according to the crystal used.
The gain of this alternating voltage amplifier is 100 times, depending on the 1M-ohm resistor, which...
This simple field strength meter is from a transistor book from the 60's. The transistor is made...
We found this circuit in an 80's Electronic Design. It makes use of couplers of the time that can...